2610 Federal Register / Vol. 72, No. 13 / Monday, January 22, 2007 / Rules and Regulations 

master cylinder assembly part number 

ZOO.N6068757280 (left hand side) and 

ZOO.N6068757281 (right hand side), unless 

EADS SOCATA TBM Aircraft Mandatory 

Service Bulletin SB 70–136, ATA No. 32, 

dated December 2005, is complied with. 

FAA AD Differences 

Note: This AD differs from the MCAI and/ 

or service information as follows: 

(1) It does not allow interim use of yokes 

found defective during inspection. FAA 

policy is to replace defective parts on critical 

systems. 

(2) It applies to all serial numbers. This 

will assure that, if any of the airplanes had 

the affected part number yokes installed after 

delivery of the airplane, the unsafe condition 

is still addressed. It also will assure that any 

of the affected part number yokes are 

inspected per the AD and service bulletin 

before future installation of these parts. 

Other FAA AD Provisions 

(f) The following provisions also apply to 

this AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Standards Staff, 

FAA, ATTN: Doug Rudolph, Aerospace 

Engineer, FAA, Small Airplane Directorate, 

901 Locust, Room 301, Kansas City, Missouri 

64106; telephone: (816) 329 4059; fax: (816) 

329 4090, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. 

(2) Airworthy Product: For any 

requirement in this AD to obtain corrective 

actions from a manufacturer or other source, 

use these actions if they are FAA approved. 

Corrective actions are considered FAA 

approved if they are approved by the State 

of Design Authority (or their delegated 

agent). You are required to assure the product 

is airworthy before it is returned to service. 

(3) Reporting Requirements: For any 

reporting requirement in this AD, under the 

provisions of the Paperwork Reduction Act 

(44 U.S.C. 3501 et seq.), the Office of 

Management and Budget (OMB) has 

approved the information collection 

requirements and has assigned OMB Control 

Number 2120 0056. 

Material Incorporated by Reference 

(g) You must use EADS SOCATA TBM 

Aircraft Mandatory Service Bulletin SB 70–

136, ATA No. 32, dated December 2005, to 

do the actions required by this AD, unless the 

AD specifies otherwise. 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

this service information under 5 U.S.C. 

552(a) and 1 CFR part 51. 

(2) For service information identified in 

this AD, contact EADS SOCATA, Direction 

des Services, 65921 Tarbes Cedex 9, France; 

telephone: 33 (0)5 62 41 73 00; fax: 33 (0)5 

62 41 76 54; or SOCATA AIRCRAFT, INC., 

North Perry Airport, 7501 South Airport Rd., 

Pembroke Pines, FL 33023; telephone: (954) 

893–1400; fax: (954) 964–4141. 

(3) You may review copies at the FAA, 

Central Region, Office of the Regional 

Counsel, 901 Locust, Room 506, Kansas City, 

Missouri 64106; or at the National Archives 

and Records Administration (NARA). For 

information on the availability of this 

material at NARA, call 202–741–6030, or go 

to: http://www.archives.gov/federal-register/ 

cfr/ibr-locations.html. 

Issued in Kansas City, Missouri, on January 

12, 2007. 

Kim Smith, 

Manager, Small Airplane Directorate, Aircraft 

Certification Service. 

[FR Doc. E7–685 Filed 1–19–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2006–24825; Directorate 

Identifier 2006–NE–17–AD; Amendment 39–

14894; AD 2007–02–07] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG Dart 528, 

529, 532, 535, 542, and 555 Series 

Turboprop Engines 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for RollsRoyce Deutschland Ltd & Co KG (RRD) 

Dart 528, 529, 532, 535, 542, and 555 

series turboprop engines. This AD 

requires a dimensional inspection of the 

intermediate pressure turbine (IPT) disk 

or an ultrasonic inspection of the seal 

arm contact between the high pressure 

turbine (HPT) and the IPT disk seal arm 

and rework or replacement of the IPT 

disk if wear outside acceptable limits is 

found. This AD results from reports of 

a number of HPT disk failures, some of 

which resulted in portions of the HPT 

disk being released. We are issuing this 

AD to prevent HPT disk failure, which 

can result in an uncontained engine 

failure and damage to the airplane. 

DATES: This AD becomes effective 

February 26, 2007. The Director of the 

Federal Register approved the 

incorporation by reference of certain 

publications listed in the regulations as 

of February 26, 2007. 

ADDRESSES: You can get the service 

information identified in this AD from 

Rolls-Royce Deutschland Ltd & Co KG, 

Eschenweg 11, D–15827 Dahlewitz, 

Germany; Telephone 49 (0) 33–7086–

1768; FAX 49 (0) 33–7086–3356. 

You may examine the AD docket on 

the Internet at http://dms.dot.gov or in 

Room PL–401 on the plaza level of the 

Nassif Building, 400 Seventh Street, 

SW., Washington, DC. 

FOR FURTHER INFORMATION CONTACT: 

Jason Yang, Aerospace Engineer, Engine 

Certification Office, FAA, Engine and 

Propeller Directorate, 12 New England 

Executive Park, Burlington, MA 01803; 

telephone (781) 238–7747; fax (781) 

238–7199. 

SUPPLEMENTARY INFORMATION: The FAA 

proposed to amend 14 CFR part 39 with 

a proposed AD. The proposed AD 

applies to RRD Dart 528, 529, 532, 535, 

542, and 555 series turboprop engines. 

We published the proposed AD in the 

Federal Register on July 11, 2006 (71 FR 

39023). That action proposed to require 

a dimensional inspection of the IPT disk 

or an ultrasonic inspection of the seal 

arm contact between the HPT and the 

IPT disk seal arm and rework or 

replacement of the IPT disk if wear 

outside acceptable limits is found. 

Examining the AD Docket 

You may examine the docket that 

contains the AD, any comments 

received, and any final disposition in 

person at the Docket Management 

Facility Docket Office between 9 a.m. 

and 5 p.m., Monday through Friday, 

except Federal holidays. The Docket 

Office (telephone (800) 647–5227) is 

located on the plaza level of the 

Department of Transportation Nassif 

Building at the street address stated in 

ADDRESSES. Comments will be available 

in the AD docket shortly after the DMS 

receives them. 

Comments 

We provided the public the 

opportunity to participate in the 

development of this AD. We have 

considered the comment received. 

Request To Incorporate by Reference 

and Publish the SBs 

One commenter, the Modification and 

Replacement Parts Association 

(MARPA), requests that we incorporate 

by reference (IBR) the SBs referenced in 

the proposed AD. We agree. This final 

rule AD IBRs the documents necessary 

for accomplishing the requirements 

mandated by this AD. We did not 

change the AD. 

MARPA also requests that we publish 

those SBs that we IBR, in Docket File 

FAA–2006–24825 of the Docket 

Management System (DMS). We are 

reviewing issues surrounding posting of 

service bulletins on the DMS as part of 

an AD docket. Once we have thoroughly 

examined all aspects of this issue and 

have made a final determination, we 

will consider whether our current 

practice needs to be revised. No change 

to the final rule is necessary in response 

to this comment. 


sroberts on PROD1PC70 with RULES
Federal Register / Vol. 72, No. 13 / Monday, January 22, 2007 / Rules and Regulations 2611 

Change in Compliance Date 

We found it necessary to change the 

compliance date in paragraph (f)(2)(i), 

which requires performing a 

dimensional inspection and repairing or 

replacing the IPT disk, if necessary. We 

changed the date from December 30, 

2006, to June 30, 2007. 

Conclusion 

We have carefully reviewed the 

available data, including the comment 

received, and determined that air safety 

and the public interest require adopting 

the AD with the changes described 

previously. 

Costs of Compliance 

We estimate that this AD will affect 

30 RRD Dart 528, 529, 532, 535, 542, 

and 555 series turboprop engines 

installed on airplanes of U.S. registry. 

We also estimate that it will take about 

50 work-hours per engine to perform the 

actions, and that the average labor rate 

is $80 per work-hour. Required parts 

will cost about $50,000 per IPT disk. We 

estimate that 25 percent, or eight 

engines, will require IPT disk 

replacement. Based on these figures, we 

estimate the total cost of the AD to U.S. 

operators to be $500,000. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

Section 106, describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in Subtitle VII, 

Part A, Subpart III, Section 44701, 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We have determined that this AD will 

not have federalism implications under 

Executive Order 13132. This AD will 

not have a substantial direct effect on 

the States, on the relationship between 

the national government and the States, 

or on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

(2) Is not a ‘‘significant rule’’ under 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); and 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a summary of the costs 

to comply with this AD and placed it in 

the AD Docket. You may get a copy of 

this summary at the address listed 

under ADDRESSES. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

Adoption of the Amendment 

■ Accordingly, under the authority 

delegated to me by the Administrator, 

the Federal Aviation Administration 

amends 14 CFR part 39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

2007–02–07 Rolls-Royce Deutschland Ltd & 

Co KG (formerly Rolls-Royce plc): 

Amendment 39–14894. Docket No. 

FAA–2006–24825; Directorate Identifier 

2006–NE–17–AD. 

Effective Date 

(a) This airworthiness directive (AD) 

becomes effective February 26, 2007. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG (RRD) Dart 528, 

529, 532, 535, 542, and 555 series turboprop 

engines. These engines are installed on, but 

not limited to, Hawker Siddeley, Argosy 

AW.650, Fairchild Hiller F–27, F–27A, F–

27B, F–27F, F–27G, F–27J, FH–227, FH–

227B, FH–227C, FH–227D, FH–227E, Fokker 

F.27 all marks; British Aircraft Corporation 

Viscount 744, 745D and 810; and Gulfstream 

G–159 airplanes. 

Unsafe Condition 

(d) This AD results from reports of a 

number of high pressure turbine (HPT) disk 

failures, some of which resulted in portions 

of the HPT disk being released. We are 

issuing this AD to prevent HPT disk failure, 

which can result in an uncontained engine 

failure and damage to the airplane. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified unless the 

actions have already been done. 

IPT Disk and HPT/IPT Disk Seal Arm 

Inspections 

(f) Within 60 days after the effective date 

of the AD, do either of the following: 

(1) Perform a dimensional inspection of the 

IPT disk and repair or replace the IPT disk, 

if necessary using paragraph 3 of the 

Accomplishment Instructions of RRD service 

bulletin (SB) Da72–538, dated June 10, 2005; 

or 

(2) Perform an ultrasonic inspection of the 

disk seal arm contact between the HPT and 

the IPT using paragraph 3 of the 

Accomplishment Instructions of RRD SB 

Da72–536, Revision 1, dated August 25, 

2003. 

(i) If wear is outside allowable limits, 

before June 30, 2007, perform a dimensional 

inspection and repair or replace the IPT disk, 

if necessary. Use paragraph 3 of the 

Accomplishment Instructions of RRD SB 

Da72–538, dated June 10, 2005. 

(ii) If wear is within allowable limits, 

perform a dimensional inspection of the IPT 

disk at the next engine shop visit or at next 

overhaul, whichever occurs first and repair 

or replace the IPT disk, if necessary. Use 

paragraph 3 of the Accomplishment 

Instructions of RRD SB Da72–538, dated June 

10, 2005. 

Alternative Methods of Compliance 

(g) The Manager, Engine Certification 

Office, has the authority to approve 

alternative methods of compliance for this 

AD if requested using the procedures found 

in 14 CFR 39.19. 

Related Information 

(h) LBA airworthiness directive D–2005–

197, dated June 30, 2005, also addresses the 

subject of this AD. 

(i) Contact Jason Yang, Aerospace 

Engineer, Engine Certification Office, FAA, 

Engine and Propeller Directorate, 12 New 

England Executive Park, Burlington, MA 

01803; telephone (781) 238–7747, fax (781) 

238–7199; e-mail: jason.yang@faa.gov for 

more information about this AD. 

Material Incorporated by Reference 

(j) You must use the Rolls-Royce 

Deutschland Ltd & Co KG service information 

specified in Table 1 to perform the actions 

required by this AD. The Director of the 

Federal Register approved the incorporation 

by reference of the documents listed in Table 

1 of this AD in accordance with 5 U.S.C. 

552(a) and 1 CFR part 51. Contact RollsRoyce Deutschland Ltd & Co KG, Eschenweg 

11, D–15827 Dahlewitz, Germany; telephone 

49 (0) 33–7086–1768; fax 49 (0) 33–7086–

3356 for a copy of this service information. 

You may review copies at the National 

Archives and Records Administration 

(NARA). For information on the availability 

of this material at NARA, call 202–741–6030, 


sroberts on PROD1PC70 with RULES
2612 Federal Register / Vol. 72, No. 13 / Monday, January 22, 2007 / Rules and Regulations 

or go to: http://www.archives.gov/federalregister/cfr/ibr-locations.html. 

TABLE 1.—INCORPORATION BY REFERENCE

Service Bulletin No. Page Revision Date 

Da72–536 ..........................................................................................................................................

Total Pages: 23 

All ........ 1 ................. August 25, 2003. 

Da72–538 ..........................................................................................................................................

Total Pages: 21 

All ........ Original ....... June 10, 2005. 

Issued in Burlington, Massachusetts, on 

January 12, 2007. 

Francis A. Favara, 

Manager, Engine and Propeller Directorate, 

Aircraft Certification Service. 

[FR Doc. E7–687 Filed 1–19–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–26921; Directorate 

Identifier 2006–NM–247–AD; Amendment 

39–14896; AD 2007–02–09] 

RIN 2120–AA64 

Airworthiness Directives; Airbus Model 

A310 Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Final rule; request for 

comments. 

SUMMARY: We are adopting a new 

airworthiness directive (AD) for the 

products listed above. This AD results 

from mandatory continuing 

airworthiness information (MCAI) 

issued by an aviation authority of 

another country to identify and correct 

an unsafe condition on an aviation 

product. The MCAI describes the unsafe 

condition as cracking in the wing main 

landing gear (MLG) rib 5 forward 

attachment lug, which could affect the 

structural integrity of the MLG 

attachment. This AD requires actions 

that are intended to address the unsafe 

condition described in the MCAI. 

DATES: This AD becomes effective 

February 6, 2007. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of February 6, 2007. 

We must receive comments on this 

AD by March 23, 2007. 

ADDRESSES: You may send comments by 

any of the following methods: 

• DOT Docket Web Site: Go to 

http://dms.dot.gov and follow the 

instructions for sending your comments 

electronically. 

• Fax: (202) 493–2251. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street, SW., Nassif Building, 

Room PL–401, Washington, DC 20590–

0001. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street, SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

• Federal eRulemaking Portal: http:// 

www.regulations.gov. Follow the 

instructions for submitting comments. 

Examining the AD Docket 

You may examine the AD docket on 

the Internet at http://dms.dot.gov; or in 

person at the Docket Management 

Facility between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The AD docket contains this 

AD, the regulatory evaluation, any 

comments received, and other 

information. The street address for the 

Docket Office (telephone (800) 647–

5227) is in the ADDRESSES section. 

Comments will be available in the AD 

docket shortly after receipt. 

FOR FURTHER INFORMATION CONTACT: Tom 

Stafford, Aerospace Engineer, 

International Branch, ANM–116, FAA, 

Transport Airplane Directorate, 1601 

Lind Avenue, SW., Renton, Washington 

98057–3356; telephone (425) 227–1622; 

fax (425) 227–1149. 

SUPPLEMENTARY INFORMATION: 

Streamlined Issuance of AD 

The FAA is implementing a new 

process for streamlining the issuance of 

ADs related to MCAI. This streamlined 

process will allow us to adopt MCAI 

safety requirements in a more efficient 

manner and will reduce safety risks to 

the public. This process continues to 

follow all FAA AD issuance processes to 

meet legal, economic, Administrative 

Procedure Act, and Federal Register 

requirements. We also continue to meet 

our technical decision-making 

responsibilities to identify and correct 

unsafe conditions on U.S.-certificated 

products. 

This AD references the MCAI and 

related service information that we 

considered in forming the engineering 

basis to correct the unsafe condition. 

The AD contains text copied from the 

MCAI and for this reason might not 

follow our plain language principles. 

Discussion 

The European Aviation Safety Agency 

(EASA), which is the aviation authority 

for the European Union, has issued 

emergency airworthiness directive 

2006–0335–E, dated November 3, 2006 

(referred to after this as ‘‘the MCAI’’), to 

correct an unsafe condition for the 

specified products. The MCAI states 

that during routine visual inspection, a 

crack has been found in the wing MLG 

(main landing gear) rib 5 forward 

attachment lug on two A310 in-service 

aircraft. Laboratory examination of one 

of the cracked ribs confirmed that the 

crack is due to the presence of pitting 

corrosion in the forward lug holes. Also 

on both aircraft medium to heavy 

corrosion was found in the forward lugs 

on the opposite wing after removal of 

the bushes. This situation if not 

detected, could affect the structural 

integrity of the MLG attachment. The 

aim of the EASA Emergency 

Airworthiness Directive (EAD) is to 

mandate repetitive detailed visual 

inspections of wing MLG rib 5 aft 

bearing forward lugs for thorough crack 

detection and replacement if necessary. 

You may obtain further information by 

examining the MCAI in the AD docket. 

Relevant Service Information 

Airbus has issued Service Bulletin 

A310–57A2088, including Appendix 01, 

dated November 6, 2006. The actions 

described in this service information are 

intended to correct the unsafe condition 

identified in the MCAI. 

FAA’s Determination and Requirements 

of This AD 

This product has been approved by 

the aviation authority of another 

country, and is approved for operation 

in the United States. Pursuant to our 

bilateral agreement with this State of 

Design Authority, they have notified us 

of the unsafe condition described in the 


sroberts on PROD1PC70 with RULES